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IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, VOL. 15, NO. 4, APRIL 2005 457 Coordinated Application of Multiple Description
 

Summary: IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, VOL. 15, NO. 4, APRIL 2005 457
Coordinated Application of Multiple Description
Scalar Quantization and Error Concealment for
Error-Resilient MPEG Video Streaming
Yen-Chi Lee, Yucel Altunbasak, Senior Member, IEEE, and Russell M. Mersereau, Fellow, IEEE
Abstract--Historically, multiple description coding (MDC) and
postprocessing error concealment (ECN) algorithms have evolved
separately. In this paper, we propose a coordinated application of
multiple description scalar quantizers (MDSQ) and ECN, where
the smoothness of the video signal helps to compensate for the loss
of descriptions. In particular, we perform a reconstruction that
is consistent with the data received at the decoder. When only a
single description is available, the video is reconstructed in such a
way that: 1) if we were to regenerate two descriptions (from the
reconstructed video), one of them would be equivalent to the re-
ceived description and 2) the reconstructed video is spatiotempo-
rally smooth. Experimental results with several video sequences
demonstrated a peak signal-to-noise ratio (PSNR) improvement of
0.92.8 dB for intracoded frames. The PSNR improvements for in-
tercoded frames were negligible. However, for both cases, the visual

  

Source: Altunbasak, Yucel - School of Electrical and Computer Engineering, Georgia Institute of Technology

 

Collections: Engineering